On average, it takes self-made millionaires 32 years to become rich, according to a Rich Habits study of over 200 millionaires cited by Business Insider.

If you have yet to launch a billion-dollar business or score a CEO position, you're in great company. The interactive graphic below, by The UK Domain, shows icons who became successful at the age you are right now.

In addition, we've highlighted eight business leaders who didn't find success until their 30s:

1. Oprah Winfrey

Born in poverty to a single teen mother, Winfrey grew up in a low-income family in rural Mississippi. At age 32, her first talk show aired nationwide, starting what would eventually become a media empire.

2. Jeff Bezos

Bezos initially founded Amazon as an online book store at age 31. Today Amazon has become the go-to seller for almost everything, and the 54-year-old is now the world's richest person.

Lindsey Wasson | Reuters

Jeff Bezos, Amazon

3. Doris Fisher

Named as one of the top 100 most powerful women by Forbes, Fisher co-founded Gap with her late husband at age 37. The retail store eventually expanded to include Old Navy and Banana Republic.

4. William Lever

In 1886, the 35-year-old co-founded a soap manufacturing company with his brother, called Lever Brothers. Their business later grew into the multinational consumer goods company Unilever.